CN116518082A - Self-adaptive sealing structure of motor bearing - Google Patents
Self-adaptive sealing structure of motor bearing Download PDFInfo
- Publication number
- CN116518082A CN116518082A CN202310545740.2A CN202310545740A CN116518082A CN 116518082 A CN116518082 A CN 116518082A CN 202310545740 A CN202310545740 A CN 202310545740A CN 116518082 A CN116518082 A CN 116518082A
- Authority
- CN
- China
- Prior art keywords
- spring
- sealing
- seat sleeve
- spring seat
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000003044 adaptive effect Effects 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
Abstract
The invention discloses a self-adaptive sealing structure of a motor bearing, wherein a spring seat sleeve and a rotating shaft are thermally assembled into a whole, an oil sealing ring is sleeved on the spring seat sleeve, a sealing groove is arranged on the surface, connected with the spring seat sleeve, of the oil sealing ring, and a sealing rubber strip is arranged in the sealing groove; the graphite ring is also sleeved on the radial outer circle of the spring seat sleeve, and two axial end surfaces of the graphite ring are respectively abutted with the outer small cover and the oil seal ring; the oil seal ring is provided with a first spring groove, and the spring seat sleeve is provided with a second spring groove corresponding to the first spring groove; the two ends of the spring are respectively arranged in the first spring groove and the second spring groove; the invention has the advantages that: the spring, the sealing ring, the spring seat sleeve, the outer small cover and the graphite ring form a sealing end face, the sealing rubber strip is arranged between the sealing ring and the spring seat sleeve, a reliable sealing structure is formed in the axial direction and the radial direction, external water and impurities can be effectively isolated from entering the motor, and the service life of the motor can be effectively prolonged.
Description
Technical Field
The invention relates to the field of machinery, in particular to a motor, and more particularly relates to a sealing structure of a motor shaft.
Background
Because the underground working condition of the coal mine is special, the working condition of water or water immersion exists in the working environment of the electrical equipment, and the condition that the shaft extension end of the motor is immersed in water to work frequently occurs. The motor shaft extension end consists of a motor power output shaft, an end cover, a bearing and an inner small cover and an outer small cover, the motor shaft extension end is of a rotary sealing structure, the prior art generally adopts a wear-resistant sealing ring as a sealing material, but the sealing ring is inevitably damaged due to long-term high-load work, water can enter the joint surface of the motor shaft extension and the bearing small cover, and after entering a bearing oil chamber, the water can damage the lubrication effect of bearing grease, and finally the bearing is damaged.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a sealing structure with a self-adaptive function, which comprises the following specific technical scheme:
a self-adaptive sealing structure of a motor bearing comprises a spring seat sleeve and an oil seal ring;
the spring seat sleeve and the rotating shaft are thermally assembled into a whole, an oil sealing ring is sleeved on the spring seat sleeve, a sealing groove is arranged on the surface, connected with the spring seat sleeve, of the oil sealing ring, and a sealing rubber strip is arranged in the sealing groove;
the graphite ring is also sleeved on the radial outer circle of the spring seat sleeve, and two axial end surfaces of the graphite ring are respectively abutted with the outer small cover and the oil seal ring;
the oil seal ring is provided with a first spring groove, and the spring seat sleeve is provided with a second spring groove corresponding to the first spring groove; the two ends of the spring are respectively arranged in the first spring groove and the second spring groove; a through hole is formed in the first spring groove, a screw hole is formed in the second spring groove, one end of the guide rod is provided with threads and screwed in the screw hole, the other end of the guide rod penetrates through the through hole, and the spring is sleeved on the guide rod;
the inner axial end face of the spring seat sleeve is abutted with the axial end face of the bearing.
The number of the first spring grooves and the number of the second spring grooves are 6, and the first spring grooves and the second spring grooves are uniformly distributed along the circumferential direction;
the spring seat sleeve and the bearing are arranged on the stepped shaft of the rotating shaft together.
The invention has the advantages that: the spring, the sealing ring, the spring seat sleeve, the outer small cover and the graphite ring form a sealing end face, the sealing rubber strip is arranged between the sealing ring and the spring seat sleeve, a reliable sealing structure is formed in the axial direction and the radial direction, external water and impurities can be effectively isolated from entering the motor, and the service life of the motor can be effectively prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of a seal ring;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a cross-sectional view of a spring sleeve;
FIG. 5 is a left side view of FIG. 4;
fig. 6 is a schematic view of the installation structure of the oil seal ring and the spring seat sleeve guide rod.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings, as shown in the drawings, the invention comprises a spring seat cover 1 and an oil seal ring 4;
the spring seat cover 1 and the rotating shaft 9 are thermally assembled into a whole, the spring seat cover 1 is sleeved with an oil sealing ring 4, a sealing groove 41 is arranged on the surface, connected with the spring seat cover 1, of the oil sealing ring 4, and the sealing rubber strip 2 is arranged in the sealing groove 41;
the graphite ring 3 is also sleeved on the radial outer circle of the spring seat sleeve 1, and two axial end faces of the graphite ring 3 are respectively abutted with the outer small cover 6 and the oil seal ring 4;
the oil seal ring 4 is provided with a first spring groove 42, and a second spring groove 11 corresponding to the first spring groove 42 is arranged on the spring seat sleeve; the two ends of the spring 5 are respectively arranged in the first spring groove 42 and the second spring groove 11; the inner axial end surface of the spring sleeve 1 abuts against the axial end surface of the bearing 8.
The number of the first spring grooves 42 and the second spring grooves 11 can be adjusted according to the diameter of the rotating shaft 9, such as 8, 10, etc., but the processing is convenient and the distribution is uniform; when the rotating shaft 9 rotates, the spring seat sleeve 1 is of a hot-set integrated structure, so that the spring seat sleeve synchronously rotates, and the spring 5 on the spring seat sleeve synchronously rotates to drive the oil seal ring 4 to synchronously rotate, so that the spring is made of metal with certain hardness; the number of the first spring grooves 42 and the second spring grooves 11 is greater than that of the first spring grooves 42 and the second spring grooves 11, which are beneficial to synchronous rotation of the oil seal ring 4, but also bring increased processing difficulty, and preferably, the number of the first spring grooves 42 and the second spring grooves 11 is 6, and the first spring grooves and the second spring grooves 11 are uniformly distributed along the circumferential direction.
Because one end of the oil seal ring 4 is abutted against the graphite ring 3 for sealing, a certain resistance is unavoidable, the resistance can influence synchronous rotation of the oil seal ring and the spring seat sleeve, for this purpose, a through hole 43 is arranged in a first spring groove 42, a screw hole 12 is arranged in a second spring groove 11, one end of a guide rod 10 is provided with threads and is screwed in the screw hole 12, the other end of the guide rod 10 passes through the through hole 43, and a spring 5 is sleeved on the guide rod; therefore, the guide rod is used for poking the oil sealing ring 4, synchronous rotation of the oil sealing ring and the spring seat sleeve is guaranteed, radial sealing between the oil sealing ring and the spring seat sleeve is further guaranteed to be in a static state, and sealing effect is improved.
The spring seat sleeve 1 and the bearing 8 are arranged on a stepped shaft of the rotating shaft 9.
The spring seat cover 1 and the rotating shaft 9 are thermally assembled, the spring seat cover 1, the metal spring 5, the oil seal ring 4 and the rotating shaft 9 synchronously rotate, and an adhesive tape is arranged between the oil seal ring 4 and the spring seat cover 1 to form static seal. And a graphite ring 3 is arranged between the outer small cover 6 and the oil seal ring 4 to form end face seal. The structure forms end face dynamic seal in the axial direction, and the sealing state of the axial end faces at the two sides of the graphite ring 3 is always kept under the thrust action of the spring; forming static seal by the radial sealing rubber strip; the combination of the radial seal and the axial seal can effectively prevent external water and impurities from entering the motor.
Claims (3)
1. An adaptive sealing structure for a motor bearing, which is characterized in that: comprises a spring seat sleeve and an oil sealing ring;
the spring seat sleeve and the rotating shaft are thermally assembled into a whole, an oil sealing ring is sleeved on the spring seat sleeve, a sealing groove is arranged on the surface, connected with the spring seat sleeve, of the oil sealing ring, and a sealing rubber strip is arranged in the sealing groove;
the graphite ring is also sleeved on the radial outer circle of the spring seat sleeve, and two axial end surfaces of the graphite ring are respectively abutted with the outer small cover and the oil seal ring;
the oil seal ring is provided with a first spring groove, and the spring seat sleeve is provided with a second spring groove corresponding to the first spring groove; the two ends of the spring are respectively arranged in the first spring groove and the second spring groove; a through hole is formed in the first spring groove, a screw hole is formed in the second spring groove, one end of the guide rod is provided with threads and screwed in the screw hole, the other end of the guide rod penetrates through the through hole, and the spring is sleeved on the guide rod;
the inner axial end face of the spring seat sleeve is abutted with the axial end face of the bearing.
2. The motor bearing adaptive seal structure of claim 1, wherein: the number of the first spring grooves and the number of the second spring grooves are 6, and the first spring grooves and the second spring grooves are uniformly distributed along the circumferential direction.
3. The motor bearing adaptive seal structure of claim 1, wherein: the spring seat sleeve and the bearing are arranged on the stepped shaft of the rotating shaft together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310545740.2A CN116518082A (en) | 2023-05-16 | 2023-05-16 | Self-adaptive sealing structure of motor bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310545740.2A CN116518082A (en) | 2023-05-16 | 2023-05-16 | Self-adaptive sealing structure of motor bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116518082A true CN116518082A (en) | 2023-08-01 |
Family
ID=87399283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310545740.2A Pending CN116518082A (en) | 2023-05-16 | 2023-05-16 | Self-adaptive sealing structure of motor bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116518082A (en) |
-
2023
- 2023-05-16 CN CN202310545740.2A patent/CN116518082A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |